close-up photo of o-ring for culvert

animal architecture art building carving cement circle clean clogged close-up construction cover culvert design dirty drain drainage duct ecology editorial environment environmental flood floor flow flowing hand historic hole indonesia infrastructure invertebrate iron irrigation landmark leak lizard logo material metal number o-ring pipe rainwater reptile road roadside rock sand sanitation semarang sewage sewer sidewalk sky soil street surface trotoar tube tunnel underground urban waste water wildlife wood